47645385 has 16 divisors (see below), whose sum is σ = 76514496. Its totient is φ = 25316928.

The previous prime is 47645363. The next prime is 47645387. The reversal of 47645385 is 58354674.

It is not a de Polignac number, because 47645385 - 2⁹ = 47644873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47645387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1579 + ... + 9888.

It is an arithmetic number, because the mean of its divisors is an integer number (4782156).

Almost surely, 2^47645385 is an apocalyptic number.

It is an amenable number.

47645385 is a deficient number, since it is larger than the sum of its proper divisors (28869111).

47645385 is a wasteful number, since it uses less digits than its factorization.

47645385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11752.

The product of its digits is 403200, while the sum is 42.

The square root of 47645385 is about 6902.5636541795. The cubic root of 47645385 is about 362.5269357710.

The spelling of 47645385 in words is "forty-seven million, six hundred forty-five thousand, three hundred eighty-five".